Germany · Battery knowledge hub
Most modern BMWs use an AGM or EFB battery — often in the boot rather than under the bonnet — and an intelligent battery sensor that manages charging. That makes BMW one of the clearest examples of why matching and registration matter.
Select a model for generation-level battery notes
The energy-management system adjusts charging based on recorded battery age and condition. A new battery that is not registered may be charged as if it were the old one.
Electrolyte is held in glass-fibre mats between the plates. AGM batteries tolerate frequent deep cycling and high electrical loads, which is why they are fitted to many premium and start-stop vehicles with brake-energy recovery.
Replacement rule: A vehicle designed for AGM should be fitted with AGM. A flooded or EFB battery in its place is likely to wear out quickly and may trigger charging-system faults.
Read the AGM guide →A strengthened version of the conventional flooded battery with improved cycling durability. EFB is commonly specified for entry-level start-stop systems that do not need the full capability of AGM.
Replacement rule: EFB can often replace a conventional battery, and AGM can often replace EFB — but EFB should not replace AGM. The vehicle may also need to be told which type is fitted.
Read the EFB guide →Generation-level information from our vehicle database. Where a field says “confirm”, it varies by engine or trim and is checked against your vehicle.
| Model | Generation | Years | Technology | Start-stop | Battery location |
|---|---|---|---|---|---|
| X5 | E70 | 2007–2013 | AGM / Conventional | Some variants | Under the boot floor |
| X5 | F15 | 2014–2018 | AGM | Common | Under the boot floor |
| X5 | G05 | 2019–present | AGM | Common | Under the boot floor |
| 3 Series | E90 | 2005–2011 | AGM / Conventional | Some variants | Boot, right side |
| 3 Series | F30 | 2012–2018 | AGM / EFB | Common | Boot, right side |
| 3 Series | G20 | 2019–present | AGM | Common | Boot, right side |
| 5 Series | F10 | 2010–2016 | AGM | Common | Boot |
| 5 Series | G30 | 2017–2023 | AGM | Common | Boot |
| 5 Series | G60 | 2024–present | Confirm | Confirm | Confirm |
| X7 | G07 | 2019–present | AGM | Common | Confirm |
Many BMWs carry the battery under the boot floor with jump terminals in the engine bay. Vent tubes must be reconnected on replacement.
Registration records a like-for-like replacement. A different capacity or technology requires coding the new specification.
Brake-energy recovery cycles the battery hard. AGM is typically specified on these systems.
Yes, on vehicles with an intelligent battery sensor. Registration tells the car the battery is new so it charges correctly.
If the car was supplied with AGM, it should be replaced with AGM. Changing type also requires coding.
In many models, under the boot floor on the right. Some models have it in the engine bay. Jump terminals are usually under the bonnet.
Tell us the model and year, and send a photo of the current battery if you can. We confirm the right battery before anyone sets off.
Daily, including late evenings. Out-of-hours requests are answered as technician availability allows.